78122679 ÷ 991 
Let's see how many times 991 fits into 78122679.

Moving on to step 1:
When dividing 7 by 991, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 991

Step 2:
78 divided by 991 is 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (1) from the dividend after 78, then repeat: 781 / 991

On to step 3:
781 divided by 991 is 0 with a remainder of 781.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 781, we get 781.
Take the next digit (2) from the dividend and append it to 781, then repeat: 7812 / 991

Step 4:
When dividing 7812 by 991, we get 7 with a remainder of 875.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 6937 from 7812 to get 875.
Grab the next digit (2) from the dividend, add it to 875, then carry on: 8752 / 991

Going ahead to step 5:
991 can be fit into 8752 8 times, resulting in a remainder of 824.
Use 8 as the next digit of our solution. 
Result so far: 78.0
Subtract 7928 from 8752 to get 824.
Fetch the next digit (6) from the dividend, attach it to 824 and continue: 8246 / 991

Step 6:
991 can be fit into 8246 8 times, resulting in a remainder of 318.
The number 8 becomes the next digit in our result. 
Result so far: 788.0
Subtract 7928 from 8246 to get 318.
Include the next digit (7) from the dividend after 318, then repeat: 3187 / 991

Advancing to step 7:
991 can be fit into 3187 3 times, resulting in a remainder of 214.
The number 3 becomes the next digit in our result. 
Result so far: 7883.0
If we take 2973 away from 3187, we end up with 214.
Include the next digit (9) from the dividend after 214, then repeat: 2149 / 991

Going ahead to step 8:
If we divide 2149 by 991, we get 2 and a remainder of 167.
Write down 2 as next digit of the result. 
Result so far: 78832.0
Deduct 1982 from 2149 and we're left with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Step 9:
The number 991 fits into 1670 1 times, leaving a remainder of 679.
The number 1 becomes the next digit in our result. 
Result so far: 78832.1
Deduct 991 from 1670 and we're left with 679.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6790, and continue the process.

Moving on to step 10:
991 can be fit into 6790 6 times, resulting in a remainder of 844.
Record the quotient 6 as the next digit in the result. 
Result so far: 78832.16
Subtract 5946 from 6790 to get 844.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8440, and continue the process.

Let's proceed to step 11:
The number 991 fits into 8440 8 times, leaving a remainder of 512.
Use 8 as the next digit of our solution. 
Result so far: 78832.168
If we subtract 7928 from 8440, we get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Going ahead to step 12:
991 goes into 5120 5 times with a remainder of 165.
Put 5 as the next digit of the answer. 
Result so far: 78832.1685
Subtracting 4955 from 5120 leaves us with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 13:
If we divide 1650 by 991, we get 1 and a remainder of 659.
The number 1 becomes the next digit in our result. 
Result so far: 78832.16851
The remainder is 659 after subtracting 991 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6590, and continue the process.

Step 14:
991 goes into 6590 6 times with a remainder of 644.
The number 6 becomes the next digit in our result. 
Result so far: 78832.168516
Subtract 5946 from 6590 to get 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Let's proceed to step 15:
If we divide 6440 by 991, we get 6 and a remainder of 494.
Put 6 as the next digit of the answer. 
Result so far: 78832.1685166
Deduct 5946 from 6440 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

The quotient of the division is 78832.1685166, and the remainder is 4.94e-06.